Darkness from the spell is an object or effect that blocks vision.
This isn't supported by the text. This aspect of the Darkness spell just behaves like ordinary darkness, which is not an object or effect that blocks vision; thus, we are able to look up and see the moon and the stars at night.
A window would be an object that, as part of a wall, I'm guessing, but even if the whole wall was a window, would cover a "target" on the other side of it. So as an emanation, Darkness from the spell cannot go through a window.
I disagree with this detail. I always rule that a creature standing behind a thin curtain or a thin pane of glass does not enjoy Total Cover.
Walls, trees, creatures, and other obstacles can provide cover, making a target more difficult to harm.
. . .
Cover provides a degree of protection to a target behind it.
Whether or not something counts as an obstacle for the purpose of Cover is a DM call. Also, the bits about "offered by: Another creature or an object that covers at least half of the target" should not be read as that being the only way that Half Cover can be achieved. For example, we should be confident that a wall, which is not classified as a creature or an object, can indeed provide Half Cover. Thus, so might other things, such as a thin pane of glass.
I personally like the idea that a DM can rule that something such as a thin pane of glass can provide Half Cover (affecting accuracy) as well as Resistance to certain types of damage (affecting the amount of damage that can be dealt). Whether or not such a ruling might be straying into homebrew territory or not is probably beyond the scope for this discussion.
It is an effect, like fog, that blocks line of sight.
No, it doesn't.
Notice that in the Line of Sight rule, fog is listed as an example, but darkness is not. Now, technically it is up to the DM to determine if a particular phenomenon blocks Line of Sight, but in my opinion, it would be silly to rule that darkness blocks Line of Sight since we know that it doesn't in the real world and it would cause all sorts of problems such as being unable to look up and see the moon and the stars at night.
It looks like a lot of emphasis is being placed on the Darkness spell description using the words "spreads" and "fills". Those aren't very good arguments. None of that makes this Darkness different from ordinary darkness -- this is just flavor text which describes where the magical effect itself (no matter what is actually created by that effect) ends up being located according to the rules for how AoE effects begin at an origin point and then extend outward from there to fill the area within a particular shape. This aspect of the spell occurs more or less instantaneously. This "spreading" of the darkness might be observable to a creature nearby, but it's not a slow thing that's happening over the course of the 10 minutes or anything like that -- it's pretty much like if you blink you'll miss it.
(Similarly, Light or Darkness emanations pass through a Wall of Force, because it is explicitly see-through, ie, not opaque).
This is probably getting beyond the scope again, but just as a quick clarification, Wall of Force is generally accepted to provide Total Cover. Therefore, it creates an obstacle for the purposes of the Clear Path rule and the AoE affected area rules.
So a wall of force is no barrier to Darkness, because it is invisible (and thus not opaque).
You are confusing the capability of the actual effect that's created (the darkness) with the magical effect itself which fills the AoE. By rule, an AoE magical effect cannot spread through Total Cover. Therefore, the magical darkness that's created by this magical effect will not be located there. The magical darkness only exists where the magical effect exists. It's the same issue with the Light spells and the Psychic Lance spell.
It's unclear how the discussion then veered into a discussion about Antimagic Field, but it's the same concept there. It doesn't matter what the effect is creating -- the magical effect itself is restricted by the Field: "Areas of effect created by spells or other magic can’t extend into the aura". This prevents all of the spells discussed so far from working there.
No. This is the beginning of logic that is going down the wrong path. Two totally different dictionary definitions of the same word, "opaque", are used in the rules unfortunately. For a heavily obscured area, it is referring to the fact that things within that area cannot be seen. In the darkness spell, it is referring to the fact that the object in question is not translucent. There is nothing about ordinary darkness which actually blocks your ability to see through it. Otherwise, we would not be able to look up at night and see the moon and the stars.
What makes something a clear path depends on the nature of the thing traveling that path.
No, this is totally false. The Clear Path rule has to do with the casting of the spell. A spellcaster tries to cast a spell such that the spell effect originates at a particular place. There must be a clear path to it so it cannot be behind Total Cover. It doesn't matter at all what is actually being created by the spell effect. An AoE magical effect which spreads from a point of origin has similar restrictions. Total Cover can prevent the effect from spreading to a particular portion of an area -- again, it doesn't matter at all what is actually being created by the spell effect.
We are never going to agree, because i do not think Magical Darkness is anything like regular darkness (which is the absence of light, not something which spreads). And I think the spell description of magical Darkness is impossible to read in a way that would cause a reasonable reader to think it was simply regular darkness.
The problem is not how the rules for darkness describe magical darkness. The problem is with how the rules for darkness describes regular darkness, because they're just wrong. You can see the moon because light reflects off the moon and reaches your eyes - light passes through that space between you and the moon. Light cannot pass through the space of magical darkness, which is why it is opaque (and nonmagical darkness is not). Similarly, you can see a campfire from 300' away, even though it doesn't shed light nearly that far in game, because the game rules for darkness are wrong for nonmagical darkness, and we all know you can see a light from far away, so long as nothing is obstructing it.
So for regular darkness, 'the rules are not a physics simulator' kicks in, and we override the rules to let us see the moon and a far away campfire, even when the rules tell us we can't, because the rules are obviously wrong and doing a poor job simulating physics. But Magical Darkness is magic, its physics are the physics the game gives it, and there's no basis for invoking 'the rules are not a physics simulator', so it is, in fact, opaque.
A Heavily Obscured area—such as an area with Darkness, heavy fog, or dense foliage—is opaque. You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Rules Glossary:
Heavily Obscured
You have the Blinded condition while trying to see something in a Heavily Obscured space.
It's just a dumb rules interaction that you could argue if you decided to apply a very strict and nonsensical version of RAW.
Yeah, I see what you're saying. I just don't even agree that that's a valid RAW interpretation in the first place. In the main text for Heavily Obscured areas, a writing style is used where a word is given followed by a definition for that word. That definition doesn't match the common dictionary definition, so it's an important clarification. The word itself is not even used in the Rules Glossary -- only the definition is used there since that's the mechanically significant portion of the rule. See above where I've quoted these things directly from the rules.
Strictly from a RAW perspective, 'obstacles' are not required to create cover.
So the only thing required to provide cover is an 'object'. Yes, obstacles provide cover, but that is because they are a subset of objects. The quoted statement 'Walls, trees, creatures, and other obstacles can provide cover' semantically means they can create cover, but it does not mean that only they can create cover.
I disagree with all of this logic. The concept of cover defines itself -- this involves obstacles which provide protection.
Main Text:
Walls, trees, creatures, and other obstacles can provide cover, making a target more difficult to harm
Rules Glossary:
Cover
Cover provides a degree of protection to a target behind it.
In fact, it's the object that's not required. An obstacle is required.
There is overlap between the concepts of an obstacle and an object, but it's not a subset relationship as you've proposed above. Instead, some objects are obstacles, and some are not. At the same time, some obstacles are objects and some are not.
The fact that Half Cover is offered by "another creature or an object that covers at least half of the target" does not mean that those are the only things that provide Half Cover. An obstacle such as a wall which covers at least half of the target can also offer Half Cover. In addition, in my opinion, "an object that covers at least half of the target" only actually offers Half Cover if that object is an obstacle. Thus, a thin curtain or a thin pane of glass might not qualify -- this would be determined by the DM.
The problem is with how the rules for darkness describes regular darkness, because they're just wrong.
This. The root problem is the statement
A Heavily Obscured area—such as an area with Darkness, heavy fog, or dense foliage—is opaque.
Mundane darkness is not opaque. It is transparent. It indicates a lack of illumination, not any effect that blocks passage of light. Heavy fog and dense foliage, however, are opaque; light cannot pass through it. Thus, there are zero ways of interpreting that sentence that don't cause something to behave nonsensically.
People rule 0 mundane darkness, because it's quite obvious that it isn't actually opaque. Unfortunately, that's not helpful for supernatural darkness. The darkness spell behaves like anti-light, annihilating light it comes in contact with, and we have no idea how something like that would actually behave.
We are never going to agree, because i do not think Magical Darkness is anything like regular darkness (which is the absence of light, not something which spreads). And I think the spell description of magical Darkness is impossible to read in a way that would cause a reasonable reader to think it was simply regular darkness.
The darkness created by the Darkness spell only "spreads" because the magical effect itself spreads. That's normal behavior for any AoE spell effect. The actual darkness is just sort of attached to this while it is spreading. The actual effect that's created is just mundane darkness -- it's just being magically placed in a certain location, and it magically gets there in a certain manner.
Here is the thing: Not all magical darkness is the same. The magical darkness that is created by the Darkness spell just isn't what you think. However, the magical darkness created by Hunger of Hadar, for example, is closer to your version of magical darkness. That particular magical darkness explicitly causes the blinded condition to creatures that are actually located within the AoE, whereas the Darkness spell doesn't do that, for example. Magical darkness only differs from ordinary darkness in the ways in which the effect which creates it says so explicitly.
So for regular darkness, 'the rules are not a physics simulator' kicks in, and we override the rules to let us see the moon and a far away campfire, even when the rules tell us we can't, because the rules are obviously wrong and doing a poor job simulating physics.
The rules tell us that we can though. The rules work just fine; they are just often misinterpreted.
The rules for ordinary darkness just tell us that it creates a Heavily Obscured area, so that area is obscured. This just means that a creature has the blinded condition when trying to see something there, because that area is obscured.
Meanwhile, the Line of Sight rule is based on whether or not "an object or effect that blocks vision—such as a stone wall, a thick curtain, or a dense cloud of fog" is in the way of being able to see something. Every such effect would have to be ruled on by the DM on a case-by-case basis -- so if a DM doesn't think that ordinary Darkness is capable of blocking vision then it doesn't.
We are never going to agree, because i do not think Magical Darkness is anything like regular darkness (which is the absence of light, not something which spreads). And I think the spell description of magical Darkness is impossible to read in a way that would cause a reasonable reader to think it was simply regular darkness.
The darkness created by the Darkness spell only "spreads" because the magical effect itself spreads. That's normal behavior for any AoE spell effect. The actual darkness is just sort of attached to this while it is spreading. The actual effect that's created is just mundane darkness -- it's just being magically placed in a certain location, and it magically gets there in a certain manner.
Here is the thing: Not all magical darkness is the same. The magical darkness that is created by the Darkness spell just isn't what you think. However, the magical darkness created by Hunger of Hadar, for example, is closer to your version of magical darkness. That particular magical darkness explicitly causes the blinded condition to creatures that are actually located within the AoE, whereas the Darkness spell doesn't do that, for example. Magical darkness only differs from ordinary darkness in the ways in which the effect which creates it says so explicitly.
So for regular darkness, 'the rules are not a physics simulator' kicks in, and we override the rules to let us see the moon and a far away campfire, even when the rules tell us we can't, because the rules are obviously wrong and doing a poor job simulating physics.
The rules tell us that we can though. The rules work just fine; they are just often misinterpreted.
The rules for ordinary darkness just tell us that it creates a Heavily Obscured area, so that area is obscured. This just means that a creature has the blinded condition when trying to see something there, because that area is obscured.
Meanwhile, the Line of Sight rule is based on whether or not "an object or effect that blocks vision—such as a stone wall, a thick curtain, or a dense cloud of fog" is in the way of being able to see something. Every such effect would have to be ruled on by the DM on a case-by-case basis -- so if a DM doesn't think that ordinary Darkness is capable of blocking vision then it doesn't.
The rules specifically tell us heavily obscured areas are opaque. It's been quoted by someone else above. The problem is that's just wrong for regular darkness, and only for regular darkness.
And the magical darkness rules say it, the magical darkness, cannot be illuminated. That means no light can pass into or through it. It's quite explicit. And there's no reason to say it cannot be illuminated if it works just like regular darkness, because regular darkness can be illuminated. It's why light can pass through it.
And you're expecting way to much precision in wording from a rules team that cannot be bothered to write in precise language, nor even template language for certain kinds of effects, for your reading of the difference between Darkness and Hunger of Hadar. In this specific effect, they describe the same consequence in two different ways (Darkness says it cannot be illuminated), but it's the same consequence (you cannot see into, out of, or through it with regular vision).
The rules specifically tell us heavily obscured areas are opaque.
Again, that word is used in that rule in a way that is not consistent with the most common dictionary definition. Instead, it uses the definition that the rule provides for it.
Opaque area: You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Which adjective would you have used to describe an area which causes the Blinded condition when trying to see something there? It's not trivial to come up with a better one. I'm sure that the designers just picked one and didn't think that people would get quite so hung up on it. It doesn't really matter anyway. It's basically flavor text -- it does not appear in the Rules Glossary description of the concept at all.
And the magical darkness rules say it, the magical darkness, cannot be illuminated. That means no light can pass into or through it.
You are drawing a conclusion that the text does not say. Mechanically, all this means is that if you light a torch such that the normal bright light and dim light radii from the torch overlap with some portion of the Darkness magical effect -- those overlapping areas do not become bright light or dim light as they normally would -- they remain at the darkness category of illumination. Whether or not light can pass into or through the area has nothing to do with that.
And you're expecting way to much precision in wording from a rules team that cannot be bothered to write in precise language, nor even template language for certain kinds of effects, for your reading of the difference between Darkness and Hunger of Hadar. In this specific effect, they describe the same consequence in two different ways (Darkness says it cannot be illuminated), but it's the same consequence (you cannot see into, out of, or through it with regular vision).
Rules and features do what they say, and a RAW discussion is about what the rules actually say.
The Darkness spell creates darkness that causes darkvision to work incorrectly and which cannot be illuminated by light of insufficient strength. That's it. Whether or not your regular vision can see into, out of, or through it is no different than how it works when interacting with ordinary darkness. If it was different in this regard, it would say so. The Hunger of Hadar spell description says so.
Again, that word is used in that rule in a way that is not consistent with the most common dictionary definition. Instead, it uses the definition that the rule provides for it.
Opaque area: You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Which adjective would you have used to describe an area which causes the Blinded condition when trying to see something there?
There is no need for such a terminology in the first place. I would have just had two entries:
Darkness: you have the blinded condition when attempting to see a target within an area of darkness.
Heavily Obscured: you have the blinded condition when attempting to see into, out of, or through a heavily obscured area.
Then decide whether abilities are supposed to be opaque or non-opaque, and use the correct terminology (or possibly both; the darkness spell could specify that it's both darkness and heavily obscured, if that's the intended effect).
Again, that word is used in that rule in a way that is not consistent with the most common dictionary definition. Instead, it uses the definition that the rule provides for it.
Opaque area: You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Darkness is opaque and it's a problem as we know. Mundane darkness & light should behave differently than magical darkness, dense fog etc but the rules don't make any distinction unfortunately and it's been discussed in lenght. A Lightly Obscured areas is not opaque while a Heavily Obscured areas is opaque.
You parse the rules and change punctuation, this is not how it's written. There no : but a . after the word opaque and the next sentence, yet you combine them when in fact they're two seperate sentences. It's not the Opaque area but Obscured area. The actual wording is:
Obscured Areas: A Heavily Obscured area—such as an area with Darkness, heavy fog, or dense foliage—is opaque. You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Again, that word is used in that rule in a way that is not consistent with the most common dictionary definition. Instead, it uses the definition that the rule provides for it.
Opaque area: You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Darkness is opaque and it's a problem as we know. Mundane darkness & light should behave differently than magical darkness, dense fog etc but the rules don't make any distinction unfortunately and it's been discussed in lenght. A Lightly Obscured areas is not opaque while a Heavily Obscured areas is opaque.
You parse the rules and change punctuation, this is not how it's written. There no : but a . after the word opaque and the next sentence, yet you combine them when in fact they're two seperate sentences. It's not the Opaque area but Obscured area. The actual wording is:
Obscured Areas: A Heavily Obscured area—such as an area with Darkness, heavy fog, or dense foliage—is opaque. You have the Blinded condition (see the Rules Glossary) when trying to see something there.
This. Also, opaque is not capitalized. It is never defined. It is not a term-of-art, but in its normal colloquial English usage.
And we can tell, because when we check the rest of the rules, we see opaque is used in its normal meaning of not being see-through. Prismatic Walls are opaque. Opaque objects can block Light/Darkness/Daylight emanations. Leomund's Tiny Hut is opaque from the outside. All of these uses are colloquial English, and means light cannot pass through them, and thus you cannot see into or through them.
In fact, it's the object that's not required. An obstacle is required.
There is overlap between the concepts of an obstacle and an object, but it's not a subset relationship as you've proposed above. Instead, some objects are obstacles, and some are not. At the same time, some obstacles are objects and some are not.
The fact that Half Cover is offered by "another creature or an object that covers at least half of the target" does not mean that those are the only things that provide Half Cover. An obstacle such as a wall which covers at least half of the target can also offer Half Cover. In addition, in my opinion, "an object that covers at least half of the target" only actually offers Half Cover if that object is an obstacle. Thus, a thin curtain or a thin pane of glass might not qualify -- this would be determined by the DM.
At the risk of being pedantic (and pretty much any RAW argument eventually devolves to this point), a wall is an object. So is a person. The may not be Objects with a capital O (i.e., something explicitly defined by the rules), but they absolutely are objects, with a lowercase o. If it can be seen, touched, or otherwise perceived with the senses then it is an object (Merriam-Webster).
At extreme levels of pedantry it can be argued that anything capable of receiving a verb (e.g., The wall fell over) is grammatically an object (leading to direct objects and indirect objects in sentences). However, that can lead to ephemeral objects (e.g., It was a strange thought). One could still use that definition, however, and then argue that the object in question fails to cover (as in provide protection to) the target.
By and large, though, it seems like we are on the same page. Cover is provided by something (whether you want to argue that it is an object or obstacle) that is capable of repelling whatever is trying to effect the target. (i.e., A transparent bowl is not capable of repelling magical Darkness due to the implications in the description, so it does not count as Cover in that context).
Again, that word is used in that rule in a way that is not consistent with the most common dictionary definition. Instead, it uses the definition that the rule provides for it.
Opaque area: You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Darkness is opaque and it's a problem as we know.
Suppose I am playing in a campaign where the daytime sky is the same color as what we have in the real world. My character approaches an exclusive club where they are very particular about the appearance of the creatures who are allowed to enter. The requirement is that the creature must be the same color as the daytime sky. Flashback a few sessions . . . during a somber campfire scene after a party member was killed, I informed the DM: "My character is blue". So now, I ask the guard who is outside in front of the entrance to the club to allow me to enter. Does he allow me to enter? Why or why not?
Mundane darkness & light should behave differently than magical darkness, dense fog etc but the rules don't make any distinction unfortunately and it's been discussed in lenght.
Dense fog does behave differently than darkness. The rules do make a distinction between them. I agree that it has been discussed at length, which is . . . surprising.
The punctuation does matter at all. Not even a little bit.
This section of the rules uses an extremely common writing style. To transition away from a previous point of discussion and introduce a new one, a topic sentence is written. Then, the meaning of that first sentence is detailed in the sentences which follow. This is abundantly clear from the context of the overall content and reiterated by the total absence of the term "opaque" from the Rules Glossary entry.
Also, opaque is not capitalized. It is never defined.
The meaning of how the word is being used in this context appears in the very next sentence after it is used. It's not difficult to find it. It's the very next sentence.
when we check the rest of the rules, we see opaque is used in its normal meaning of not being see-through. Prismatic Walls are opaque. Opaque objects can block Light/Darkness/Daylight emanations. Leomund's Tiny Hut is opaque from the outside. All of these uses are colloquial English, and means light cannot pass through them, and thus you cannot see into or through them.
You forgot Wall of Fire! Yes! These are excellent examples of how the same word can be used in a different way amidst different context (such as, to describe physical things) than how it is used to describe a particular type of area (not a physical thing). I agree. And yes, this is the whole point.
By and large, though, it seems like we are on the same page. Cover is provided by something (whether you want to argue that it is an object or obstacle) that is capable of repelling whatever is trying to effect the target. (i.e., A transparent bowl is not capable of repelling magical Darkness due to the implications in the description, so it does not count as Cover in that context).
I'm not so sure that we're on the same page on this.
First of all, the concept of Cover (providing a degree of protection / making a target more difficult to harm) has absolutely nothing at all to do with "covering" an object with something opaque. These rules just happen to be using the same word, but in two totally different ways and with two totally different meanings (. . . oh, wow. I'm having a really intense feeling of Deja Vu . . . Have we been discussing this exact same concept somewhere else?? Weird . . .)
However, just in case there was some question about whether or not a Darkness or Light or Daylight spell is able to spread through a translucent but sturdy wall -- it cannot. The magical effect cannot bypass Cover as per the rules for spellcasting, particularly the rules for AoE spell effects. It doesn't matter what the magical effect creates, it's blocked by Cover.
[...] Tangent: I'd note the area of effect of Light is a touched object, and when Darkness is cast on an object, the area of effect is that object. The light/darkness radiated are not part of the spell's AoE, but an effect produced after the casting from that object. So the Clear Path rule doesn't even apply except between the caster and the object.
Since this is a tangent, I'm stepping in again to say that this doesn't sound right to me.
Areas of Effect created by spells are part of the spell's Area of Effect. For example, with Darkness, it doesn't matter whether the origin is a point, creating a Sphere, or an object, creating an Emanation. Both options cover an area called an Area of Effect and both are part of the spell's effects.
Effects
The effects of a spell are detailed after its duration entry. Those details present exactly what the spell does, which ignores mundane physical laws; any outcomes beyond those effects are under the DM’s purview. Whatever the effects, they typically deal with targets, saving throws, attack rolls, or all three, each of which is detailed below.
Targets
A typical spell requires the caster to pick one or more targets to be affected by the spell’s magic. A spell’s description says whether the spell targets creatures, objects, or something else. [...] Areas of Effect. Some spells, such as Thunderwave, cover an area called an area of effect, which is defined in the rules glossary. The area determines what the spell targets. The description of a spell specifies whether it has an area of effect, which is typically one of these shapes: Cone, Cube, Cylinder, Emanation, Line, or Sphere.
Dense fog does behave differently than darkness. The rules do make a distinction between them.
How dense fog behave differently than darkness and which rules make a distinction between them exactly? Opinion aside, just quote the rule please.
Because they're both cited as example of Heavily Obscured area being opaque the rules below;
Obscured Areas: A Heavily Obscured area—such as an area with Darkness, heavy fog, or dense foliage—is opaque. You have the Blinded condition (see the Rules Glossary) when trying to see something there.
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We are never going to agree, because i do not think Magical Darkness is anything like regular darkness (which is the absence of light, not something which spreads). And I think the spell description of magical Darkness is impossible to read in a way that would cause a reasonable reader to think it was simply regular darkness.
The problem is not how the rules for darkness describe magical darkness. The problem is with how the rules for darkness describes regular darkness, because they're just wrong. You can see the moon because light reflects off the moon and reaches your eyes - light passes through that space between you and the moon. Light cannot pass through the space of magical darkness, which is why it is opaque (and nonmagical darkness is not). Similarly, you can see a campfire from 300' away, even though it doesn't shed light nearly that far in game, because the game rules for darkness are wrong for nonmagical darkness, and we all know you can see a light from far away, so long as nothing is obstructing it.
So for regular darkness, 'the rules are not a physics simulator' kicks in, and we override the rules to let us see the moon and a far away campfire, even when the rules tell us we can't, because the rules are obviously wrong and doing a poor job simulating physics. But Magical Darkness is magic, its physics are the physics the game gives it, and there's no basis for invoking 'the rules are not a physics simulator', so it is, in fact, opaque.
Main Text:
Rules Glossary:
Yeah, I see what you're saying. I just don't even agree that that's a valid RAW interpretation in the first place. In the main text for Heavily Obscured areas, a writing style is used where a word is given followed by a definition for that word. That definition doesn't match the common dictionary definition, so it's an important clarification. The word itself is not even used in the Rules Glossary -- only the definition is used there since that's the mechanically significant portion of the rule. See above where I've quoted these things directly from the rules.
I disagree with all of this logic. The concept of cover defines itself -- this involves obstacles which provide protection.
Main Text:
Rules Glossary:
In fact, it's the object that's not required. An obstacle is required.
There is overlap between the concepts of an obstacle and an object, but it's not a subset relationship as you've proposed above. Instead, some objects are obstacles, and some are not. At the same time, some obstacles are objects and some are not.
The fact that Half Cover is offered by "another creature or an object that covers at least half of the target" does not mean that those are the only things that provide Half Cover. An obstacle such as a wall which covers at least half of the target can also offer Half Cover. In addition, in my opinion, "an object that covers at least half of the target" only actually offers Half Cover if that object is an obstacle. Thus, a thin curtain or a thin pane of glass might not qualify -- this would be determined by the DM.
This. The root problem is the statement
Mundane darkness is not opaque. It is transparent. It indicates a lack of illumination, not any effect that blocks passage of light. Heavy fog and dense foliage, however, are opaque; light cannot pass through it. Thus, there are zero ways of interpreting that sentence that don't cause something to behave nonsensically.
People rule 0 mundane darkness, because it's quite obvious that it isn't actually opaque. Unfortunately, that's not helpful for supernatural darkness. The darkness spell behaves like anti-light, annihilating light it comes in contact with, and we have no idea how something like that would actually behave.
The darkness created by the Darkness spell only "spreads" because the magical effect itself spreads. That's normal behavior for any AoE spell effect. The actual darkness is just sort of attached to this while it is spreading. The actual effect that's created is just mundane darkness -- it's just being magically placed in a certain location, and it magically gets there in a certain manner.
Here is the thing: Not all magical darkness is the same. The magical darkness that is created by the Darkness spell just isn't what you think. However, the magical darkness created by Hunger of Hadar, for example, is closer to your version of magical darkness. That particular magical darkness explicitly causes the blinded condition to creatures that are actually located within the AoE, whereas the Darkness spell doesn't do that, for example. Magical darkness only differs from ordinary darkness in the ways in which the effect which creates it says so explicitly.
The rules tell us that we can though. The rules work just fine; they are just often misinterpreted.
The rules for ordinary darkness just tell us that it creates a Heavily Obscured area, so that area is obscured. This just means that a creature has the blinded condition when trying to see something there, because that area is obscured.
Meanwhile, the Line of Sight rule is based on whether or not "an object or effect that blocks vision—such as a stone wall, a thick curtain, or a dense cloud of fog" is in the way of being able to see something. Every such effect would have to be ruled on by the DM on a case-by-case basis -- so if a DM doesn't think that ordinary Darkness is capable of blocking vision then it doesn't.
The rules specifically tell us heavily obscured areas are opaque. It's been quoted by someone else above. The problem is that's just wrong for regular darkness, and only for regular darkness.
And the magical darkness rules say it, the magical darkness, cannot be illuminated. That means no light can pass into or through it. It's quite explicit. And there's no reason to say it cannot be illuminated if it works just like regular darkness, because regular darkness can be illuminated. It's why light can pass through it.
And you're expecting way to much precision in wording from a rules team that cannot be bothered to write in precise language, nor even template language for certain kinds of effects, for your reading of the difference between Darkness and Hunger of Hadar. In this specific effect, they describe the same consequence in two different ways (Darkness says it cannot be illuminated), but it's the same consequence (you cannot see into, out of, or through it with regular vision).
Again, that word is used in that rule in a way that is not consistent with the most common dictionary definition. Instead, it uses the definition that the rule provides for it.
Opaque area: You have the Blinded condition (see the Rules Glossary) when trying to see something there.
Which adjective would you have used to describe an area which causes the Blinded condition when trying to see something there? It's not trivial to come up with a better one. I'm sure that the designers just picked one and didn't think that people would get quite so hung up on it. It doesn't really matter anyway. It's basically flavor text -- it does not appear in the Rules Glossary description of the concept at all.
You are drawing a conclusion that the text does not say. Mechanically, all this means is that if you light a torch such that the normal bright light and dim light radii from the torch overlap with some portion of the Darkness magical effect -- those overlapping areas do not become bright light or dim light as they normally would -- they remain at the darkness category of illumination. Whether or not light can pass into or through the area has nothing to do with that.
Rules and features do what they say, and a RAW discussion is about what the rules actually say.
The Darkness spell creates darkness that causes darkvision to work incorrectly and which cannot be illuminated by light of insufficient strength. That's it. Whether or not your regular vision can see into, out of, or through it is no different than how it works when interacting with ordinary darkness. If it was different in this regard, it would say so. The Hunger of Hadar spell description says so.
There is no need for such a terminology in the first place. I would have just had two entries:
Then decide whether abilities are supposed to be opaque or non-opaque, and use the correct terminology (or possibly both; the darkness spell could specify that it's both darkness and heavily obscured, if that's the intended effect).
Darkness is opaque and it's a problem as we know. Mundane darkness & light should behave differently than magical darkness, dense fog etc but the rules don't make any distinction unfortunately and it's been discussed in lenght. A Lightly Obscured areas is not opaque while a Heavily Obscured areas is opaque.
You parse the rules and change punctuation, this is not how it's written. There no : but a . after the word opaque and the next sentence, yet you combine them when in fact they're two seperate sentences. It's not the Opaque area but Obscured area. The actual wording is:
This. Also, opaque is not capitalized. It is never defined. It is not a term-of-art, but in its normal colloquial English usage.
And we can tell, because when we check the rest of the rules, we see opaque is used in its normal meaning of not being see-through. Prismatic Walls are opaque. Opaque objects can block Light/Darkness/Daylight emanations. Leomund's Tiny Hut is opaque from the outside. All of these uses are colloquial English, and means light cannot pass through them, and thus you cannot see into or through them.
At the risk of being pedantic (and pretty much any RAW argument eventually devolves to this point), a wall is an object. So is a person. The may not be Objects with a capital O (i.e., something explicitly defined by the rules), but they absolutely are objects, with a lowercase o. If it can be seen, touched, or otherwise perceived with the senses then it is an object (Merriam-Webster).
At extreme levels of pedantry it can be argued that anything capable of receiving a verb (e.g., The wall fell over) is grammatically an object (leading to direct objects and indirect objects in sentences). However, that can lead to ephemeral objects (e.g., It was a strange thought). One could still use that definition, however, and then argue that the object in question fails to cover (as in provide protection to) the target.
By and large, though, it seems like we are on the same page. Cover is provided by something (whether you want to argue that it is an object or obstacle) that is capable of repelling whatever is trying to effect the target. (i.e., A transparent bowl is not capable of repelling magical Darkness due to the implications in the description, so it does not count as Cover in that context).
Suppose I am playing in a campaign where the daytime sky is the same color as what we have in the real world. My character approaches an exclusive club where they are very particular about the appearance of the creatures who are allowed to enter. The requirement is that the creature must be the same color as the daytime sky. Flashback a few sessions . . . during a somber campfire scene after a party member was killed, I informed the DM: "My character is blue". So now, I ask the guard who is outside in front of the entrance to the club to allow me to enter. Does he allow me to enter? Why or why not?
Dense fog does behave differently than darkness. The rules do make a distinction between them. I agree that it has been discussed at length, which is . . . surprising.
That's true -- you don't have the Blinded condition when trying to see something there, I agree.
The punctuation does matter at all. Not even a little bit.
This section of the rules uses an extremely common writing style. To transition away from a previous point of discussion and introduce a new one, a topic sentence is written. Then, the meaning of that first sentence is detailed in the sentences which follow. This is abundantly clear from the context of the overall content and reiterated by the total absence of the term "opaque" from the Rules Glossary entry.
The meaning of how the word is being used in this context appears in the very next sentence after it is used. It's not difficult to find it. It's the very next sentence.
You forgot Wall of Fire! Yes! These are excellent examples of how the same word can be used in a different way amidst different context (such as, to describe physical things) than how it is used to describe a particular type of area (not a physical thing). I agree. And yes, this is the whole point.
Nope.
I'm not so sure that we're on the same page on this.
First of all, the concept of Cover (providing a degree of protection / making a target more difficult to harm) has absolutely nothing at all to do with "covering" an object with something opaque. These rules just happen to be using the same word, but in two totally different ways and with two totally different meanings (. . . oh, wow. I'm having a really intense feeling of Deja Vu . . . Have we been discussing this exact same concept somewhere else?? Weird . . .)
However, just in case there was some question about whether or not a Darkness or Light or Daylight spell is able to spread through a translucent but sturdy wall -- it cannot. The magical effect cannot bypass Cover as per the rules for spellcasting, particularly the rules for AoE spell effects. It doesn't matter what the magical effect creates, it's blocked by Cover.
Since this is a tangent, I'm stepping in again to say that this doesn't sound right to me.
Areas of Effect created by spells are part of the spell's Area of Effect. For example, with Darkness, it doesn't matter whether the origin is a point, creating a Sphere, or an object, creating an Emanation. Both options cover an area called an Area of Effect and both are part of the spell's effects.
How dense fog behave differently than darkness and which rules make a distinction between them exactly? Opinion aside, just quote the rule please.
Because they're both cited as example of Heavily Obscured area being opaque the rules below;